Customs and duties payble (Windhoek)

Hi, my daughter is getting married in Dec to a Namibian resident. We would like to take some of her furniture in the next couple of months to Windhoek from SA. I want more info on what duties, if any are payable as well as what documentation will be required. I am not making use of a furniture removal company but will be taking the stuff by road . She will permanently re-locate to Namibia in Dec after the wedding.